Hi luikki,
after some more debugging, and thanks to the help of Tex: there is something strange going which I could fix but it will be tricky.
Instead, and
to test a much easier solution first: could it be that you still have the old rpm/apt-get and synaptic? To test this, can you open Synaptic and then search for
synaptic, in the column
Installed Version you should have version
0.57.2-23.
a) your Synaptic version is older:
in Synaptic please search for and install
aptupgrade. Then close Synaptic and all your applications, read and follow the instructions
here. After you have installed this program you must run it from
PCmenu -> Software Center -> Apt Upgrade. Then
reboot your system, run lomanager again and let me know if it works or not.
b) your Synaptic version is uptodate: bad luck for me, need to code the fix....
I suspect option a) is the case and will fix your issues. Please let me know if I'm correct with this, I hope so because then I don't need to do option b)

-p.